export function parseTime(time, cFormat) {
  if (arguments.length === 0) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if (('' + time).length === 10) time = parseInt(time) * 1000
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
    let value = formatObj[key]
    if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
    if (result.length > 0 && value < 10) {
      value = '0' + value
    }
    return value || 0
  })
  return time_str
}

// 格式化时间
export function formatTime(time, option) {
  time = +time * 1000
  const d = new Date(time)
  const now = Date.now()

  const diff = (now - d) / 1000

  if (diff < 30) {
    return '刚刚'
  } else if (diff < 3600) { // less 1 hour
    return Math.ceil(diff / 60) + '分钟前'
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + '小时前'
  } else if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(time, option)
  } else {
    return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分'
  }
}

export function getQueryObject(url) {
  url = url == null ? window.location.href : url
  const search = url.substring(url.lastIndexOf('?') + 1)
  const obj = {}
  const reg = /([^?&=]+)=([^?&=]*)/g
  search.replace(reg, (rs, $1, $2) => {
    const name = decodeURIComponent($1)
    let val = decodeURIComponent($2)
    val = String(val)
    obj[name] = val
    return rs
  })
  return obj
}

export function getByteLen(val) {
  let len = 0
  for (let i = 0; i < val.length; i++) {
    if (val[i].match(/[^\x00-\xff]/ig) != null) {
      len += 1
    } else { len += 0.5 }
  }
  return Math.floor(len)
}

export function cleanArray(actual) {
  const newArray = []
  for (let i = 0; i < actual.length; i++) {
    if (actual[i]) {
      newArray.push(actual[i])
    }
  }
  return newArray
}

export function param(json) {
  if (!json) return ''
  return cleanArray(Object.keys(json).map(key => {
    if (json[key] === undefined) return ''
    return encodeURIComponent(key) + '=' +
            encodeURIComponent(json[key])
  })).join('&')
}

export function param2Obj(url) {
  const search = url.split('?')[1]
  if (!search) {
    return {}
  }
  return JSON.parse('{"' + decodeURIComponent(search).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g, '":"') + '"}')
}

export function html2Text(val) {
  const div = document.createElement('div')
  div.innerHTML = val
  return div.textContent || div.innerText
}

export function objectMerge(target, source) {
  /* Merges two  objects,
     giving the last one precedence */

  if (typeof target !== 'object') {
    target = {}
  }
  if (Array.isArray(source)) {
    return source.slice()
  }
  for (const property in source) {
    if (source.hasOwnProperty(property)) {
      const sourceProperty = source[property]
      if (typeof sourceProperty === 'object') {
        target[property] = objectMerge(target[property], sourceProperty)
        continue
      }
      target[property] = sourceProperty
    }
  }
  return target
}

export function scrollTo(element, to, duration) {
  if (duration <= 0) return
  const difference = to - element.scrollTop
  const perTick = difference / duration * 10
  setTimeout(() => {
    console.log(new Date())
    element.scrollTop = element.scrollTop + perTick
    if (element.scrollTop === to) return
    scrollTo(element, to, duration - 10)
  }, 10)
}

export function toggleClass(element, className) {
  if (!element || !className) {
    return
  }
  let classString = element.className
  const nameIndex = classString.indexOf(className)
  if (nameIndex === -1) {
    classString += '' + className
  } else {
    classString = classString.substr(0, nameIndex) + classString.substr(nameIndex + className.length)
  }
  element.className = classString
}

export const pickerOptions = [
  {
    text: '今天',
    onClick(picker) {
      const end = new Date()
      const start = new Date(new Date().toDateString())
      end.setTime(start.getTime())
      picker.$emit('pick', [start, end])
    }
  }, {
    text: '最近一周',
    onClick(picker) {
      const end = new Date(new Date().toDateString())
      const start = new Date()
      start.setTime(end.getTime() - 3600 * 1000 * 24 * 7)
      picker.$emit('pick', [start, end])
    }
  }, {
    text: '最近一个月',
    onClick(picker) {
      const end = new Date(new Date().toDateString())
      const start = new Date()
      start.setTime(start.getTime() - 3600 * 1000 * 24 * 30)
      picker.$emit('pick', [start, end])
    }
  }, {
    text: '最近三个月',
    onClick(picker) {
      const end = new Date(new Date().toDateString())
      const start = new Date()
      start.setTime(start.getTime() - 3600 * 1000 * 24 * 90)
      picker.$emit('pick', [start, end])
    }
  }]

export function getTime(type) {
  if (type === 'start') {
    return new Date().getTime() - 3600 * 1000 * 24 * 90
  } else {
    return new Date(new Date().toDateString())
  }
}

export function debounce(func, wait, immediate) {
  let timeout, args, context, timestamp, result

  const later = function() {
    // 据上一次触发时间间隔
    const last = +new Date() - timestamp

    // 上次被包装函数被调用时间间隔last小于设定时间间隔wait
    if (last < wait && last > 0) {
      timeout = setTimeout(later, wait - last)
    } else {
      timeout = null
      // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
      if (!immediate) {
        result = func.apply(context, args)
        if (!timeout) context = args = null
      }
    }
  }

  return function(...args) {
    context = this
    timestamp = +new Date()
    const callNow = immediate && !timeout
    // 如果延时不存在，重新设定延时
    if (!timeout) timeout = setTimeout(later, wait)
    if (callNow) {
      result = func.apply(context, args)
      context = args = null
    }

    return result
  }
}

export function deepClone(source) {
  if (!source && typeof source !== 'object') {
    throw new Error('error arguments', 'shallowClone')
  }
  const targetObj = source.constructor === Array ? [] : {}
  for (const keys in source) {
    if (source.hasOwnProperty(keys)) {
      if (source[keys] && typeof source[keys] === 'object') {
        targetObj[keys] = source[keys].constructor === Array ? [] : {}
        targetObj[keys] = deepClone(source[keys])
      } else {
        targetObj[keys] = source[keys]
      }
    }
  }
  return targetObj
}

export function string2Bool(value) {
  if (typeof value === 'string') {
    value = value.toLowerCase()
    if (value === 'false' || value === '0' || value === '' || value === 'null') {
      return false
    }
  }

  return value
}

export function generateUUID() {
  let d = new Date().getTime()
  const uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
    const r = (d + Math.random() * 16) % 16 | 0
    d = Math.floor(d / 16)
    return (c == 'x' ? r : (r & 0x7 | 0x8)).toString(16)
  })

  return uuid
}

export function getType(value) {
  let type = typeof value

  if (type === 'object') {
    if (value === null) {
      type = 'null'
    } else if (value instanceof Array) {
      type = 'array'
    } else if (value instanceof Function) {
      type = 'function'
    }
  }

  return type
}

export function detect() {
  let equipmentType = ""
  const agent = navigator.userAgent.toLowerCase()
  const android = agent.indexOf("android")
  const iphone = agent.indexOf("iphone")
  const ipad = agent.indexOf("ipad")
  const ipod = agent.indexOf("ipod")

  if (android !== -1) {
    equipmentType = "android"
  }

  if (iphone !== -1 || ipad !== -1 || ipod !== -1) {
    equipmentType = "ios"
  }

  return equipmentType
}

export function getViewbox(domId = 'vux_view_box_body') {
  return document.getElementById(domId)
}

export function boxScrollTo(height = 0, domId = 'vux_view_box_body') {
  const $box = getViewbox(domId)
  //scrollTo not work in android wechat
  $box.scrollTo ? $box.scrollTo(0, height) : $box.scrollTop = height
}

export function backToTopWithAnimation(targetScrollTop=0, time = 500, cb) {
  const beginTime = Date.now()
  const box = getViewbox()
  const beginValue = box.scrollTop
  const difference = targetScrollTop - beginValue
  const rAF = window.requestAnimationFrame || (func => setTimeout(func, 16))

  const cubic = (value) => Math.pow(value, 3)
  const easeInOutCubic = (value) => {
    return value < 0.5 ? cubic(value * 2) / 2 : 1 - cubic((1 - value) * 2) / 2
  }

  const frameFunc = () => {
    const progress = (Date.now() - beginTime) / time
    if (progress < 1) {
      box.scrollTop = beginValue + difference * easeInOutCubic(progress)
      rAF(frameFunc)
    } else {
      box.scrollTop = targetScrollTop
      cb && cb(box)
    }
  }
  rAF(frameFunc)
}

export function throttle(callback) {
  let isRunning = false
  return function() {
    if (isRunning) return
    isRunning = true
    // requestAnimationFrame:回调间隔 = 浏览器重绘频率
    window.requestAnimationFrame(function(timestamp) {
      callback()
      isRunning = false
    })
  }
}

/*
获取域名第一个子域名: 如uchur.uchur.net 获取uchur,同时适配测试域名
*/
export function get1stHostName() {
  const hostname = window.location.host.split('.')[0]
  return hostname === 'devuchur' ? 'uchur' : hostname
}

export function uuidFormat(sourceUuid) {
  const _strlen = [8, 4, 4, 4, 12]
  let startpos = 0
  let uuid = ''

  for(let p of _strlen) {
    if (uuid.length <= 0) {
      uuid = sourceUuid.substr(startpos, p)
    } else {
      uuid = uuid + '-' + sourceUuid.substr(startpos, p)
    }

    startpos = startpos + p
  }

  return uuid
}

export function datetimeSerialize(dateTime) {

  let split = dateTime.split("T")
  let result = ""

  result += split[0] + " " + split[1].slice(0,5)
  return result
}

//  秒数转换成分钟
export function secondToMinute(second, $units = [ 'مىنۇت', 'مىنۇت', 'سېكونت' ]) {
  let minute = Math.floor(second / 60)
  let secondLeft = second % 60

  if (secondLeft === 0) {
    return minute + ' ' + $units[0]
  }

  return minute + $units[1] + secondLeft + $units[2]
}

export function isMimeVideo(file) {
  const videoType = /^video\//;

  if (! videoType.test(file.type)) {
    return false
  }

  return true
}

export function isMimeImage(file) {
  const type = /^image\//;

  if (! type.test(file.type)) {
    return false
  }

  return true
}

export function isEmpty(value) {
  if (value === null || value === undefined || value === '') {
    return true
  }

  return false
}

export function stringFormat(str, vals) {
  return str.replace(/{(\d+)}/g, function(match, number) {
    return typeof vals[number] != 'undefined'
      ? vals[number]
      : match
  })
}

export function formatPhoneNumber(phoneNumber) {
  return phoneNumber.replace(/(\d{3})(\d{4})(\d{4})/, '$1 $2 $3');
}

